Combined automatic throttle and stop valve.



R. A. MoKEE. COMBINED AUTOMATIC THROTTLB AND STOP VALVE. APPLICATION FILED APB. 14, 1906.

'WnNESSE v u INI/ENTOR A0.

6XL TTORNET.

UNITED STATES PATENT ormoniN ROBERT A. nox'EE, or lMILWAUKEE, WISCONSIN, AssieNoR To ALLIs-CHALMEBS conPANY, or MILWAUKEE, wIscoNsIN, A eoaPoEATIoN or NEW JERSEY.'

CG'HEINEE AUTOMATIC TERGTTLE AND sToP vALvE. Y

l'To all whom it may concern:

' which the followi event, or when any Be it known that I, Romina' A. MCKEE, a citizen of the United States, residing at Milwaukee, .in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in .Combined Automatic Throttle and Sto Valves, of

is a specification',

This invention re ates to an improvement in valve operating mechanism a'ndparticularl to means for quickly and automatically closin the valve independently of the normal c osing means. f

It is especially adaptabe tor use in connection with elastic-duid turbines for controlling the supply of steam or other iuid thereto, and may be connected to the governoror to a separate governor whereby the valve may be quickly andy .automatically closed whenv the turbine attains too high a speed ,or the governor for any reason fails to rform its function. This automatic closing means constitutes aI safety stop for shutting oli" the steam and stopping-the engine when abnormal conditions revall. Obviously this automatic shut-o means* 1s also applicable in various other connections and may be used in -any machine wherein it is desirable to automatically operate a valve upon the happening of an certain predetermine stage 1s reached in the operation of the device.

This invention is not limited to anyV particular kind of valve or forfusewith any particular ii id, but by its use all accidents due toabnor al conditions of any kind may be prevent through the automatic and positive closing of the valve.

The construction and operation of two ofv the forms which this invention may assume will now be described in detail, reference being had to the accompanying drawing forming a part of this specification and in which,--v

Fi re 1 is a section showing a valve provide with one form of the automatic closing device. Fig. 2 is a section on the line II-II of Fig. 1, but showin a slightly modified form of the releasing vice. Fig. 3 is a side elevation of the trip device, a portion thereof being shown in section. Fig. 4 is a side elevation of the upper end of the valve stem but at right angles to Figs. 1

form of closing device.

Specication of Letters Intent. y Application tiled vApril 14, 1906. Serial No. 311,636.

The collar is slip e Patented May 3, 1910.

R-e'ferrin to Figs. 1 to 4 inclusive of the drawings, t ere is illustrated a valve casing 1, having a diaphragm 5, a port 6 therein whereby the inlet passage 7 communicates with the outlet passage 8 and a valve 9 having guide Wings 10 extending through the port 6 and guiding the valve to its seat on the diaphragm. A cap 'piece 11 forms part of the valve casin and extending through a suitable stufiing ox 12 in said cap ieee, is the valve stem 13 by which the va ve is operated. The detail structure of the valve and valve casing shown, does not constitute any part of the present invention as itis evident that any form of valve could be used with the automatic closing means shown.

The cap piece 11 carries an open frame 14 for supporting the valve operating mechanism,.wh1ch will now be described.

The valve stem 13 has its outer end of reduced cross section, formin a shoulder 20 and a spindle extension 15 v-tting within a socket in the end of the threaded stem 16, which latter passes through a threaded boss `18 on the frame 14 and is provided with any suitable form of handle 17 for operating the same and controlling the valve 9. The threaded stem 16 has a fiange 19 on its inner end resting on the shoulder 20 of the valve stem 13 and normally held in contact therewith b means of a collar 21 and lugs 22 on the va ve stem. The collar 21 has a ilange 23 resting on the flange 19 ofthe stem 16 and is provided with slots 24 having oi-set portions forming shoulders 25. Supported onthe valve stem 13 near its outer end are two oppositely disposed vlugs 22 havin screw threaded engagement therewith an provided with fiat stem and cylindrica ortion 270 at the ends. over the end of the valve stem 13 wit the flat portions 26 of the lugs extending through the slots 24. The

.collar is then given a slight turn so that the rtions -26 adj acont the of the lugs and thus securely hold the valve l stem 13 and the threaded operating stemy 16 together. The valve 9 may thus be o ened and closed at will by means of the ha le 17 and the connecting' means above described.

When the machme which is controlled by this mechanism attains too high a speed, has accomplished any desired result, or in any' way reaches a predetermined limiting condition, it is desirable that the suppl-y of u'id be automatically and quickly cut off. The drawings illustrate several forms of apparatus ca able of attaining this object. In Fig. 1 t e collar 21 is provided with two substantially parallel arms 27 between which extends a rod or bar 28 carried by two lugs on a sleeve 29. This sleeve is pivoted on a bolt 30 secured in the side of the frame 14 and may be oscillated by means of an outwardly extending arm 31 which is normally of oscillation, where by means of the rod 28 and arms 27, the coll its limiting positions with the lugs 26 on the shoulders 25. The end of the arm 31 may be connected to the governor of the engine, or to a separate governor, or to any suitable indicator or controller capable of movin the arm 31, whereby the collar is oscillate the shoulder 25 removed from beneath the flat portion 26 of the lug and the valve stem rmitted to descend and close the valve 9. f desired, the arm 31 may be left free at its outer end without connecting it -to any other part and may constitute merely 'an emergency means for quickly closing the valve when to close it by means of the handle 17 would take too lon time. f

. A slightly moed form of releasing means w ich may be the preferred form, is shown' in Fig.' 2. Here the arms 27 are shown farther apart, and instead of a rod 28 being used, the sleeve 29 is semi-cylindrical thus forming two projections 32, 33, against which the arms 27 bear. The arm 31 when in the position shown in solid lines, has the projection 32 beyond-the normal to the arm 27 which passes through the pivot 30.` Thus any .tendency of the collar to turn with the stem 16 by reason of friction will bev resisted,

as ressure on the projection 32 will only tong to swing thearm 31 still farther and this, means therefore constitutes a lock. When the arm 31 is swun to the lposition shown in dotted lines, e arms 27 are moved, the collar 21 oscillated andthe valve stem released, ythe same as in the form shown in Fig. 1. l

For more uickly and surely closing the valve when re eased in the manner above described, suitable spring actuated means may be rovided. As shown in Fig. 1, the lugs 22 gave cylindrical extension 270 beyond the ilat portions 26, and mounted on these extensions are the yoke arms 34 of a lever 35. The frame 14 is provided with an arm 36 carrying a link 37 which acts as a. fulcrum for the lever and also carrying a base plate 38 for a spring 39.l The other plate 40 for the spring is carried by the lever 35 and the two plates are kept in alinement by means of a rod 41 passing throu h the centers o both and secured to the ever plate 40 in any suitable manner. The two p ates38and 40 are preferably secured to the arm 36 in a position near one of its limitsv ar 21 is held in one of` and lever 35 bymeans of lugs 43pivotally fastened-to yoke-arms 42 -on the arm 36 and lever 35, whereby the motion of the leverv may be accommodated for without moving the rod other than longitudinally. To prevent the valve from being injured by closing too rapidly, the rod 41 1s rovided with a iston 44 tting into a das -pot 45 carried y an arm46 on the frame 14.

When the arm 31 has been moved so as to release the valve stem 13, and the spring has forced the same down, the valve will remain shut until reopened in the following manner. y The stem 16 isv screwed down, by means of the. handle17, until the lugs 26 reach the end of the slots 24 and the stem 16 contacts with the valve stem 13,the arm are utilized for closing the valve than that shown in Fig. 1. The threaded stem 16 and flange 19 are secured to connecting links 50 by means of a collar 51 screw threaded to the link 50 and having a flange 52 iitting over the flange 19. A lock nut 53 may be used in connection with the collar 51 to more securely hold it in place. Both the con-l necting link 50 and the valve stem 13 are prevented from rotating byproviding eachy with a longitudinal slot 54 having a pin 55 passing Vtherethrough and secured to the rame 60'. The valve; stem 13 carries a flanged collar 58 acting as the supporting plate for a coil spring 59 held between it and a cross plate 61 in the frame.' This spring 59 normally tends to force the valve stem 13 down and close the valve. The emergency releasing means utilized in this form consists of a hook 62 on the end of the valve stem 13, a pivoted spring ressed latch 63 on the link 50 and means or disengaging the latch from the hook. The

latch 63 carries an arm 64 in the line of movement of a lug or cam 67 pivoted in the frame 60 and operated by a lever arm 66 integral therewith and connected to a link or handle 65. By pullingout on the link or handle 65, the lug or cam 67 contacts with the arm 64, moves it inward and disengages the latch 63 from whereby the valve is closed b the action of the sprlng 59. Vhen it is esired to open the valve, the stem 16 is screwed down until the bevel pointed latch and hook slidev ast each other and become rengaged. he valve is then again under direct control Correction in Letters Patent No. 956,595.

from the threaded stem 16 by which Vit is normally o erated.

Having t us described my invention, what I claim as new and desire to secure by Letters `Patent, is

1. The comblnation of a valve, manually operable screw-threaded means for moving said valve, means for connecting said valve with said screw-threaded means, means for automatically closing said valve, and mov able means for disconnecting and connecting means, said disconnecting means being free from interference by said screw-threaded means during any manual operation thereof.

2. The combination of a valve, unanually operable screw-threaded means for moving said valve, means for connecting said valve with said screw-threaded means, means for automatically closing said valve by separation from said screw-threaded means, and movable means for disconnecting said connecting means. i

In testimony whereof l niix my signature in presence of two witnesses.

. ROBERT A. MCKEE. lVitnesses: i

JOHNDAY, Jr., MAX Roma.

It is hereby certified that in- Letters Patent No. 956,595, granted May 3, 1910, I upon the application of Robert A. McKee, of Milwaukee, Wisconsin, for an improvement in A Combined Automatic Throttle and Stop Valve, an error appears in the printed specification requiring correction as follows: lPage 3, line 11, the yword and should read saa'd'; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Signed and sealed this 14th day of June, A. D., 1910.'

C. C. BILLINGS,

Acting Commissioner of Patents.

Correction in Letters Patent No. 956,595.

from the threaded stem 16 by which Vit is normally o erated.

Having t us described my invention, what I claim as new and desire to secure by Letters `Patent, is

1. The comblnation of a valve, manually operable screw-threaded means for moving said valve, means for connecting said valve with said screw-threaded means, means for automatically closing said valve, and mov able means for disconnecting and connecting means, said disconnecting means being free from interference by said screw-threaded means during any manual operation thereof.

2. The combination of a valve, unanually operable screw-threaded means for moving said valve, means for connecting said valve with said screw-threaded means, means for automatically closing said valve by separation from said screw-threaded means, and movable means for disconnecting said connecting means. i

In testimony whereof l niix my signature in presence of two witnesses.

. ROBERT A. MCKEE. lVitnesses: i

JOHNDAY, Jr., MAX Roma.

It is hereby certified that in- Letters Patent No. 956,595, granted May 3, 1910, I upon the application of Robert A. McKee, of Milwaukee, Wisconsin, for an improvement in A Combined Automatic Throttle and Stop Valve, an error appears in the printed specification requiring correction as follows: lPage 3, line 11, the yword and should read saa'd'; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Signed and sealed this 14th day of June, A. D., 1910.'

C. C. BILLINGS,

Acting Commissioner of Patents.

Itis hereby certified that in Letters Patent No. 956,595, granted May 3, 1910,

upon the application of Robert A. McKee, of Milwaukee, Wisconsin, for an improvement in A. Combined Automatic Throttle 'and Shop Valve, an error appears in the printed specification requiring correction as follow: Page 3, line 11, the word and should read said; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the mise in the Patent Oiiioe. A

Signed and sealed this 14th day of June, A. D., 1910.

C. C. BILLINGS, Acting mnmissoner Qf Patente.

[SEAL] 

